Table 3.
Logistic regression model including Hypoperfusion Intensity Ratio (HIR) in predicting good collateral status as defined by DSA ASITN CS of 3 or greater.
| Variables | Univariate Analysis Unadjusted Odds Ratio (OR (95% Confidence Interval)) | Multivariate Logistic Regression Analysis | |||
|---|---|---|---|---|---|
| Adjusted OR | 95% Confidence Interval | p Value | |||
| Lower | Upper | ||||
| Hypoperfusion Intensity Ratio (HIR) | 3.37 (2.0–5.65) | 0.378 | 0.081 | 1.757 | 0.215 |
| Age | 0.99 (0.98–1.01) | 0.990 | 0.967 | 1.013 | 0.383 |
| Sex | 0.80 (0.49–1.30) | 0.957 | 0.504 | 1.816 | 0.893 |
| Race | 0.99 (0.72–1.40) | 0.869 | 0.553 | 1.365 | 0.542 |
| Hypertension | 0.74 (0.41–1.27) | 0.626 | 0.293 | 1.339 | 0.227 |
| Hyperlipidemia | 1.05 (0.65–1.70) | 1.140 | 0.608 | 2.139 | 0.683 |
| Diabetes Mellitus | 1.16 (0.68–2.00) | 1.077 | 0.523 | 2.219 | 0.840 |
| Heart Disease | 1.01 (0.63–1.64) | 0.885 | 0.435 | 1.801 | 0.736 |
| Atrial Fibrillation | 1.17 (0.72–1.91) | 1.588 | 0.773 | 3.262 | 0.208 |
| Prior Stroke or Transient Ischemic Attack | 1.06 (0.59–1.91) | 1.030 | 0.481 | 2.205 | 0.940 |
| Intravenous Tissue Plasminogen Activator Administered (IV tPA) | 1.24 (0.76–2.04) | 1.163 | 0.610 | 2.217 | 0.646 |
| Admission National Institute of Health (NIH) Stroke Scale | 0.96 (0.93–0.99) | 0.960 | 0.914 | 1.009 | 0.108 |
| Premorbid Modified Rankin Score (mRS) | 1.17 (0.94–1.46) | 1.308 | 0.964 | 1.775 | 0.085 |
| Admission Alberta Stroke Program Early CT Score (ASPECTS) | 1.25 (1.06–1.45) | 1.168 | 0.959 | 1.423 | 0.122 |